為什麼要測量量導電率?
導電率可以作為相當便宜和低維護的水質指標。污染少的水質電導率較低。與 pH 值相比,維護工作少得多,校準也最少。電導率用於鍋爐供水、逆滲透和除鹽器應用。
由於導電率在一定程度上會隨著過程中離子濃度的增加而增加,因此我們可以使用它與酸或鹼等溶液的%濃度值相關聯. 同樣,導電率是非特定的,一次只能測量一種化學物質的百分比濃度,而不能測量多種化學物質的混合物。
用於測量電導率的基本感測器類型有兩種:接觸式和感應式(環形、無電極)。
使用接觸式感測器時,透過向浸入溶液中的感測器電極(共同構成電池常數)施加交流電流並測量產生的電壓來測量導電率。該溶液充當感測器電極之間的電導體。
導電率測量的準確性可能受到以下因素的影響:
- 偏光。
- 污染:2 極電池電極表面上的沉積物或塗層也有類似的影響極化錯誤,即電導率讀數低於平常。使用 4 極電導池也可以防止這些影響。
- 電纜電阻:電纜電阻可能會導致測量誤差,必須考慮。
- 溫度:電導率測量取決於溫度,如果溫度升高,電導率也會增加。
Details
![]() |
![]() |
![]() |
|
| Model Code | SC42 Large Bore | SC4A(J) | SC42 Small Bore |
|---|---|---|---|
| Cell Constants | 0.01/cm; 0.1/cm; 1.0/cm | 0.02/cm; 0.1/cm | 0.02/cm; 0.1/cm; 1.0/cm |
| Ranges | 0.02-2,000 µS/cm; 0.2-20,000 µS/cm; 2.0-200,000 µS/cm | 0.04-400 µS/cm; 0.2-2,000 µS/cm | 0.04-400 µS/cm; 0.4-2,000 µS/cm; 4.0-5,000 µ/cm |
| Temperature Element | Pt1000 | Pt1000 | Pt1000 |
| Pressure Rating | 10 bar/142 PSIG | 10 bar/142 PSIG | 7 bar/100 PSIG |
| Maximum Temperature | 150°C/302°F | 110°C/230°F | 100°C/212°F |
| Installation Connections | Requires FD40, FS40 or FF40 Holder | 3/4" NPT Fitting; 1", 1.5" or 2" Tri-Clamp; Retractable | 3/4" NPT Fitting; 1", 1.5" or 2" Tri-Clamp |
| Integral Cable | NO | YES | YES |
| Materials Of Construction | 316 Stainless Steel | 316 Stainless Steel or Titanium | 316 Stainless Steel or Titanium |
| Design Sytle | 2-Electrode | 2-Electrode | 2-Electrode |
參考
Process liquid analyzers such as pH meters, conductivity meters, ORP meters, and density meters play an important role at electrolysis plants in the control of concentrations of various process solutions. This requires both precision and stability under harsh conditions that include highly corrosive substances, high temperatures, and many impurities.
Seawater leak detection is the post-condensation water quality management processes. Damage to the ion exchange resin, which deionizes the supplied water, is also monitored during this process, and both of these applications are executed by a conductivity analyzer. (AN10D01P01-01E)
To defray energy costs, many industrial plants have their own boilers to generate steam in order to produce a portion of their energy needs. In addition to generating power, the steam may also be used directly in plant processes or indirectly via heat exchangers or steam jacketed vessels.
There are a number of suppliers of oil and fat products used for edible purposes. These products include, but are not limited to olive oil, peanut oil, soybean oil, sunflower oil, lard, shortening, butter, and margarine. The raw materials for these products include animal by-products, fleshy fruits (palm and olive), and oilseeds.
Industry:Food and Beverage
Reverse osmosis (RO) is a separation process that uses pressure to force a solution through a membrane that retains the solute on one side and allows the pure solvent to pass to the other side. More formally, it is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure in excess of the osmotic pressure.
下載
技術訊息
- Conductivity Analyzer Selection Guide (871 KB)
- Contacting Conductivity sensor selection guide (1.6 MB)
- SENCOM 4.0 Platform: Grounding (3.6 MB)
認證證明
- EU_UK Declaration of conformity SC49 2022-10-03 (114.1 KB)
- DEKRA 14ATEX0074X-Issue 2 -E SC4A, SC42 and SX42 (309.0 KB)
- IECEx_DEK_14_0032X_Issue 1 SC4A, SC42 and SX42 (1.0 MB)
- KCs_SC42(21-KA4BO-0419X) (155.8 KB)
- KCs_SC42(21-KA4BO-0420X) (156.8 KB)
- DEKRA 14ATEX0074X-Issue 1 SC4A, SC42 and SX42
- IECEx_DEK_14_0032X_Issue 0 SC4A, SC42 and SX42
- TS_SC4A SC42,SX42 (1.7 MB)
- EACEx_SC4A SC42,SX42 (3.7 MB)
- PESO_SC4A SC42,SX42 (97.7 KB)
- Ex NEPSI_SC4A SC42,SX42 (917.1 KB)
- EU_UK Declaration of conformity SC42 2022-10-03 (158.2 KB)
- EU_UK Declaration of conformity SC41 2022-10-03 (125.2 KB)
- FM20US0123X FU20, FU24, SC25V, SC4A, SC42, SX42 (410.1 KB)
- EU_UK Declaration of conformity SC4A 2022-10-03 (165.5 KB)
- SC42/SX42/SC4A ATEX/ IECEx (2.3 MB)
- FM20CA0062X FU20, FU24, SC25V, SC4A, SC42, SX42 (390.0 KB)
- EAC certificate for sensors (1.8 MB)
影片
Check out what is in the box when you receive Yokogawa epoxy type conductivity sensor SV42-EV15.
想了解更多技術&解決方案嗎?
聯絡我們


